Need to adjust the speed every time I turn on turntable


Need to adjust the speed every time I turn on turntable.This is a belt driven Oracle Delphi II with Origin Live motor and Origin Live Control Board and Origin Live Power Supply.  I am guessing it can be the belt, motor, control board and /or power supply.   How do I determine what is not working?
dcaudio
I had to replace the controller on my Origin Live table when the 45RPM setting became unstable.  The speed was all over the map from extremely slow to chipmunk fast.
Testpilot, well then I guess origin live has some work to do. A turntable should be a set it and forget it device. Drifting motors and controllers is not acceptable in this day and age. Neither my SOTA or SME vary at all, cold, warm, upside down or sideways. The SOTA I check maybe once a year and it might drift a little. The SME not at all.  
@mijostyn, I agree 100% with you, and that is what I dumped my origin live modified LP12.  
AC synchronous motors rely on stability of AC frequency, which before accounting for noise from other sources can vary by up to +/-2Hz, which is an error range of 6.7%. Noise that breaks the synchronization can increase this to 10% depending on the power factor of the source. Bottom line is to use a line frequency conditioning device for equipment that has AC synchronous motors. This is why quartz oscillator disciplined phase locked loop controlled DC motors maintain speed with much greater precision and reliability.